This is a A-R163994 Plate, Clutch PN: R163994Main Description As Following : A-R163994 Plate; Clutch P.N: R163994 Inside Diameter: 4.743"Outside Diameter: 7.672"Tangs: 8Thickness: .120" Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, John Deere COMBINE: 9770STS (Feederhouse Drive Gearcase), John Deere COMBINE: 9870STS (Feederhouse Drive Gearcase), Separator Area > Separator Area, John Deere COMBINE: S670 (Primary Countershaft Drive), John Deere COMBINE: S680 (Primary Countershaft Drive), John Deere COMBINE: S685 (Primary Countershaft Drive), John Deere COMBINE: S690 (Primary Countershaft Drive), Transmission & Rear Axle > Clutch Plates: Clutch and PTO, John Deere TRACTOR: 8120, John Deere TRACTOR: 8120T, John Deere TRACTOR: 8130, John Deere TRACTOR: 8220, John Deere TRACTOR: 8220T, John Deere TRACTOR: 8225R, John Deere TRACTOR: 8230, John Deere TRACTOR: 8230T, John Deere TRACTOR: 8235R, John Deere TRACTOR: 8245R, John Deere TRACTOR: 8260R, John Deere TRACTOR: 8270R, John Deere TRACTOR: 8285R, John Deere TRACTOR: 8295R Associated Items : A-RE294017 Also This is An Aftermarket Product And : Inside Diameter: 4.743" Outside Diameter: 7.672" Tangs: 8 Thickness: .120"